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First screenshots of the XBox360 version

Here are a few screenshots of the XBox360 version of Oversteer:

were caught transferring data directly from XBox360 to a PC, using the technique described in the following post in our forum. They are concerned with 720p resolution (1280x720).
At present we are completing the implementation of the core engine for the game: we have already created and tested a powerful MeshRenderManager enabling the optimized design of mesh (sorted by shader, technique and material) to reduce the changes of state of the graphics pipeline as well as a flexible management of the shader with various optimizations to minimize the need to pass parameters.

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Development Diary

We have inaugurated a new topic forum, dedicated to a diary that keeps track of the development process of the simulator. It will be useful also to keep the visitors on the progress of the project, both for fans of video games and graphics programming, which may find interesting technical cues.

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First screenshots

The graphics engine of the simulator, which we nicknamed xMotor, is under implementation. For now we are at a 20% labor. Below we can see a few screens. To underline that the shaders are provisional as along with the lighting and the circuit.

The following is a particular effect normal mapping to bring out the relief of a curb. We are working to emphasize this effect via the parallax normal mapping.

Even the grass will take a more realistic shader. Currently lacks the skybox. Finally, the entire scene will be subjected to post processing effects: bloom effect is emphasized by the contrast between light areas and those little brighter. Using the radial motion will blur blurred the periphery of vision.

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Poll Results on additional features

The 25/10

launched a survey to determine the additional features most desired by users. Now results are available, we see summaries in the image. As you may notice prevailed by far the force feedback (72%) and Multiplayer (68%), followed by damage (52%). Will account for what is expressed by the users in future implementations. Meanwhile, we take this opportunity to thank everyone who participated actively. Soon there will be new polls come back to visit!

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First renderings of cars

our chart, "Speedpn", has started to shape the first car for the game. On the side you can see two render, made with the modeling program. E 'premature for now have some screenshots in game. We decided to focus initially on a car wheel covers, because it simplifies some technical aspects: collision, suspension etc ... For later versions include a car. We have also decided not to include actual car, but "plausible." This frees us from licensing issues and also allows us greater creative freedom: we can create our ideal self, both in terms of graphics and physically. As you can see, this first car is loosely inspired by the Opel GT, with some stylistic trait of the Corvette. You can also perform tuning on it: there will be body kits and technical to transform it into the racing version.

Currently we have only defined the basic mechanics of setting: Longitudinal front engine, rear wheel drive;
To define the remaining characteristics (mass, static mass distribution, power, torque, type of exchange, differential scheme suspension etc ...), ask your participation: You can use the following topic on the forum for advice. This way you can help create your ideal car. You can also make suggestions about style.

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Two young and promising real pilots join the staff as a tester!

staff is happy Oversteer to announce that two young drivers 'real' are suggested as a tester of the simulator. This is Alessandro Bressan, professional kart driver and best student of the Course and 2006 federal CSAI speed test experiences on Formula Gloria / Blue, Formula Campus and Formula Renault 2000 Mazda MX5 Cup By the way is a great lover computer science and has also created a logo for the contest!

The other new tester is another young driver: Nicholas Valenti, only 18 years. He has previous experience as a driver of karts, he also attended the Federal CSAI Speed \u200b\u200bCourse 2006 and claimed tests on car Formula Renault 2000 and Formula Azzurra. In the picture we see him next in action on a Formula Renault 2000 in Vallelunga. And 'big fan of driving simulations on PC.

Congratulations to both of you can find the necessary budget to race cars!

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physical model of the tires

The tires have a key role in the dynamics of a vehicle through them we have the vehicle's interaction with the asphalt, and are home to all the main forces exchanged with it. In literature, many physical models have been proposed for them, but for our purpose realtime simulation we have identified these possible candidates:

• model Pacejka
  
• brush model
• spring model

The first is the most widely used by most current simulations, is an empirical model based on experimental observations of some correlations between the quantities characterizing the behavior of a gomma.E 'based on' approximated curves of some of the tire behavior (such as lateral force / slip angle) by interpolation. The coefficients of interpolating polynomials are obtained by means of "magic formulas" from some physical parameters. The advantage is that at runtime everything is reduced to a simple lookup in a table, because the job of calculating the coefficients can be easily done offline and store the in all pre-calculated tables.

The last two models attempt to explain the physical phenomenon of the adhesion rubber-asphalt and calculate the forces at play. In fact, you must divide the tire sectors (or segments) and apply the formulas to each of them. From the standpoint of use in real-time are much heavier than Pacejka, in fact every frame must calculate all the forces and iterate this calculation for each area. But to simulate some important aspects such as elastic deformation of the shoulder of the tire, the temperature distribution on the tread, etc ...

To explore the question, please read the appropriate topics in the forum and to participate actively adding opinions, technical information etc ...

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Important Announcement

Because of the same name as an existing flash free game, made by SH in California, we are forced to change the name of the project Oversteer - The Game .

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Oversteer AAA Logo Contest

E 'with great pleasure that the staff of Oversteer launches contest for the creation of the official logo.
Anyone who wants to participate in creating an image of the logo (indicating clearly the name "Oversteer - The Game" in it) and send it, along with a brief presentation of the Creator, the mail oversteergame@gmail.com
Entries must received by December 31, 2007. From 1 January 2008 received the logos will be displayed in a gallery and will be held a public poll to decree the best. How
prize winner will be included in the credits of Oversteer.
That the challenge begin!

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circuit wanted. . .

For the first test of Engine chart urge to have a 3D model of a circuit well done. Thus we turn to the Italian community in many modders simracing: there would be enough permission to use within a circuit Oversteer already made (perhaps in the form of rFactor, etc.).

to take this opportunity to reiterate that we are always looking for a 3D model of circuits for the creation of dedicated circuits to Oversteer.

hope of finding a great help, waiting for your proposals.

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Force Feedback

From the partial results of the survey show that, so far, the most desirable features is the force feedback. As our knowledge on this subject are quite limited, we support you all.

What are the physical laws that govern it?
How does it interface with the engine peripherals? Would
manual or automatic setting of its parameters?

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The staff is expanding!

As you can see from the box, the technical staff of the project expands. Offers are coming together by all parties. Today we have added Alessandro Castellini, a mechanical engineer in Milan as a consultant for the physical Pierluigi Nastasi, student of Information Science of Catania as a model of car, and finally Mirco Dondolini , 23-year-old Tuscan great sim racing expert, as a tester across the board. Congratulations to our new employees from the staff.
invitation to all lovers of Italian racing sim: help with the project according to your ability and skills! We make a concerted effort to create the best Italian sim!

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Open a forum on DrivingItalia

Thanks to the support offered by the portal DrivingItalia, we have a forum dedicated to the project. Three sections were created:

1. Technical choices: we will discuss the pros and cons of various solutions implemented
2. Physics: vehicle dynamics will be discussed and formulas related
3. Wishlist : This section was created with the aim of identifying innovative and original features that differentiate Oversteer by existing simulators.

A special thanks to Nicola "Velocipede" Trivilino, director and founder of DrivingItalia, which made this possible.
We expect many on the forum, to grow together this project.

Stefano Coppi
Project Leader and Lead Programmer of Oversteer

What Does Vesa Lcd Means

We are looking for employees at no charge with the following profiles:

• Programmer C # / XNA for graphics engine with knowledge of the main algorithms for 3D graphics
  
• C # programmer for gamelogic and menu
  
• Programmer C # expert on the dynamics of the vehicle engine physical
• expert in vehicle dynamics for development of the physical model and looking for real data
• Programmer expert Force Feedback
• Technical audio sounds Engine
• Chart 3D modeling circuit
• Chart 3D modeling of self
• 3D graphics for creating objects on the track
• Graph 2D graphics for the menus and the site
• Musician composition for background music for physics
• Tester Tester
• generic

Interested parties may send a short CV, indicating their availability to the email address that appears in the contacts.

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seeks partners launched the survey for extra features

I ran a poll to determine which are the additional features most desired by users. You can vote in the section beneath the profile.

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great interest in the project specifications

A big thank you to all the 300 visitors to the blog during the first day of life! I am very flattered by all this interest! A special thanks to Nicola Trivilino of DrivingItalia.net who promptly reported the news of the birth of this project on its portal and immediately offered support and Robbiexsstar and Desmo of forums slipangle, who advertised the news on their forum.
Come on guys, we do see that us Italians we can compete with the various ISI, SimBin, Blimey, Turn 10, Bizarre Creations, Digital Poliphony etc ...

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Minimal

Being a "garage" game, developed in his spare time, you can not expect to have the wealth functionality of commercial games. For the first release I decided to focus on a minimum set of features that distinguish it as a realistic driving simulation, with advanced graphics and advanced physics. The project must be very flexible so you can add more functionality over time, and other categories of cars.
Analyzing the main driving simulators, I have identified the essential characteristics for Oversteer:

hardware / software platforms:

• Windows XP / Vista : DirectX 9.0c, XNA Framework, video card with Shader Model 2.0 or higher.
• XBox360 with XNA Game Launcher installed.
  

Gameplay:

• track type: street circuits
  
• Type of car: wheel covers, car
  
• Game Mode: private tests, single race, championship
• Choice of sessions (practice, qualifying, race)
• Setup editable

Graphics:

• Normal mapping for all objects of the circuit
• Offset mapping to emphasize the importance of the curbs
• Environment mapping for car bodies
• with HDR and dynamic lighting effects "bloom"
  
• Soft shadows
• lens flare effect when you have the sun in front of the tires on the asphalt tracks

Sound:

• engine sounds pre-recorded

Physics:

• Aerodynamics : simulation of the downforce of the wings and ground effect, the wake effect.
• frame: the moment of inertia about three axes, anti-roll bars.
• Suspension: double wishbone. Adjustable shock absorbers and springs.
  
• Tires: Pacejka model-like, temperature, pressure and wear variables dynamically
• Transmission: rear-wheel drive with limited slip differential adjustable

Artificial Intelligence:

• configurable number of opponents
• pilots to defend the position that
  
• possible errors of pilots to

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Genesis of Oversteer Oversteer

As a child, playing with the first game for the legendary Commodore 64, I dreamed of becoming a game programmer, then the cases of life and environmental conditions (low sw-house distribution of video games in Italy), led to deal with boring business software. But I continue to cultivate this passion and chase this dream. So far they have managed to achieve only incomplete demo, but from the Microsoft XNA framework I started to believe in the possibility of creating a "garage game".
This library allows the programmer to focus on the amateur specific aspects of your game, avoid spending time putting up the infrastructure, just think of the ease of importing graphics and sound files allowed by the Content Pipeline. Also I have been fascinated by the idea of \u200b\u200bbeing able to schedule a next-generation consoles like Xbox 360 and it is amazing how easily you can deploy and debug a project on the X360. The main objection that many people make is that the use of an interpreted language such as C # is a limit to performance, but in fact the largest computational load in the modern game you have for graphics and this is now almost entirely drawn from the GPU via shaders, so C # is no longer a big problem. For me, that I came from years of programming C and C + +, C # was a discovery pleasant, really construct a very powerful and convenient as the region, the delegates also allows you to use threads so easy, this is a card winner of the XNA framework because all the new CPUs are multicore (XGPU can process the 6 hardware threads simultaneously). A further push towards the choice of XNA came to learn that, in early 2008, Microsoft will launch a YouTube-like site, which will serve as a showcase for amateur games created with XNA. I think it's important to have a minimum visibility for your game, also the best video games published by Microsoft itself will be on XBox360 Live Arcade Marketplace. Also with version 2.0 of XNA, which is available at Christmas, it will also support multiplayer network, making it really completes the platform.
Choosing the technology, I had to decide the type of game to be created, I have decided to make a game that I would have liked to play, rather than deciding based on commercial grounds and fashions. Have always been fond of car racing and F1, and my favorite video games are always been the driving simulators and therefore the choice fell on this type. Also because there were some good examples of games created by amateur projects of one to two people and become a commercial reality: see example of Italian or the Dutch Netke Live for Speed, the game you intend to inspire me, however, is R- Factor, for its versatility and modifiability. Other sources of inspiration were the driving realism of Forza Motorsport 2 and clean graphics and lighting of Gran Turismo 4 and 5. It 'clear that for an amateur project is impossible to reach the technical level of the games mentioned as well as implement all their features. So I decided to focus on a subset Feature of that for me are the essence of a driving simulator: a photo-realistic graphics and physics very realistic. Much of the preparatory work for this game was to study the dynamics of the vehicle: I bought 3 different books, including the "Bible" of the race engineers, "Racecar Vehicle Dynamics" by Milliken & Milliken.

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Welcome!

This blog was conceived as a diary that describes the creation of the video game "Oversteer", a simulation of driving on the track, which was developed for Windows and XBox360.

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Launch your tomato Mastella!

" Mastella is under investigation for abuse of office , illegal financing of political parties, competition in fraud within EU and national funding from De Magistris."


You're fed up '? Hate it? There is only a little bit annoying?
We did close the blog? We did open a blog?

Once the thing would be resolved as it should: with the launch of vegetables!

Launch your tomato Mastella! Simply add a comment below.

prefer an egg, a pie in the face, a tripod? You decide!

but I recommend ', no stones, no bombs, it wants to be cmq a peaceful protest against someone who, perhaps, not so much common ground '...

Take good aim e. ..

(image cc-by-sa-2.0 by David from Rome, from Wikipedia)

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a consideration of running cables

15 #

An effective, to my knowledge the most effective of all, the procedure of running the cable industry, has long been known among fans extremes, but jealously guarded, involves the application to a stream of high voltage cables with the current generation.
is preferable to have already completed and before you begin, give them a shape similar to a curve that will take time to pose.
To meet this need every trick is valid, one of the most practical ultilizzo provides a small copper tube plumbing, ductile and malleable, which prior to the second form the desired path, then there is the cable clamp, which will be then fence to his guardian.
Once the process is running, should be handled carefully, trying not to lose shape, this is because any excessive movement of the wires, reduces the effectiveness of treatment.
The direction of current flow, peremptorily down the back of the cable.

Such a procedure is the prerogative of technicians able to work safely with high voltages and with the expertise to determine which voltage can be applied, depending on the break in the cable and connectors used

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do without the step-up for MC can still

14 #

As I said above, I consider the use of the inevitable step-up heads with 1 ohm, and thus sense fully embrace the approach of the Audio Research Reference Phono.

A brief aside:

Now it seems to me, "cracked" the intent that motivated the designers in the conception of the Reference Phono:
- The input impedance transformer is to head as close as possible to 1 ohm (not more than the 5 ohm).
- For all the other ... you get another entry, adjusting the value of load resistance.
The confusion arose because Audio Research says the transformer input impedance to 280 ohms, who wrote a similar thing I suppose he had drained the liquid blue of the toilet bowl, the fact is that they sent Bring a bit 'all. What, in my opinion, fared better Montanucci, while the technical Stereophile, John Atkinson, trying to juggle, he suggested unspecified compatibility issues with the Audio Precision measurement set, remedying the figure of stunned. It is easy to verify that data sheets of all processors are based on surveys Jensen Audio Precision.

End of engraved.

reiterate my concern when dealing with heads having 2.5 to 5 ohm impedance, the situation is similarly difficult cases to 1 ohm, and I understand that in many circumstances the use of step-up is preferable. But assuming a phono with gain generous, with large transconductance and clean circuit (maximum of two triode, used in purity), in this case I think that without the step-up musical performance would improve.

not forget that the step-up transformer is driven by a generator (the head) that provides voltage and current so poor as to make the matter very sensitive in all respects. So
heads with more than 20 ohm impedance, in my opinion would be only right to do without the step-up.
Although I understand that for many designers is a problem, resulting in the need for higher gain without sacrificing quality music and at the same time having to fight with greater breath (No longer reduced by the step-up transformer).

To support these considerations, I refer to the Audio Research Reference Phono above and I'm going to note that, as a pure circuit, there are doubts, even without the scheme.
I am sure that the majority like to see a device full of valves as the Eniac, but one wonders why a 22 triode phono needed only for the audio section, there are a bit 'so many?

As an MC phono two triodes per channel is more than enough for a pre-scheduled a triode is also too much for a 30W final two triodes are sufficient (as shown in a previous post) and, in case you need higher power to 150W, just add an extra triode.
Overall, the MC cartridge to the speakers, 6 triodes per channel is sufficient.
As ever with the same number of triodes in the Audio Research Reference Phono we get only half of the audio portion of a channel? (Series: I put my head on the hard review between now and 5 minutes when the music starts coming out) scheme

Without much you can not say, but, looking at a chart produced by Stereophile, we can extrapolate important considerations.



The graph shows the distortion as a function of output voltage and the typical behavior of the "magic donkey."
Normally, a donkey loaded with weights, the poor animal will work harder with increasing load.
With the "magic ass" the opposite happens, the greater the weight and do less work ... just like in the graph with the distortion of the Reference Phono, the higher the output voltage distortion and the more it changes.
This spell has a name: negative feedback * *, and given the trend of the graph, quite possibly including multi-stage closes (pain).
's why you need all those triodes! In conclusion I would agree

streamline phono circuits with short routes and natural purity and increasing performance with triodes they are low noise, fast ... and by the generous gain in these cases, it becomes possible to dispense with the step-up. It would be a definite advantage in terms of clarity and agility.

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on NC 20

13 #

The NC20 weighs 2 pounds and is bigger dell'NC14 loooong, and handles much better than the current, although it has a lot more permeable core. For a long
not use the NC20 el'NC21 (the last time I used the NC21 was linked to the contrary, driven by a RL12T15 in graphite, the working point 600V - 30 mA, pushing a PSE 211 in A2 disarming ease and distortions irrelevant, I can not remember the exact value, but close to zero), but I tried them several times in different ways and I am quite certain that the distortion introduced is perfectly consistent with the data-sheet.
The data-sheet says: NC20, driven by a valve with Ri 5Kohm swings and 20 mA BIAS 150 Vrms (few?), Distortion = 0.1%.
I remember a test with the EC8020 to 20 mA, Swing exaggeration of volts peak to peak values \u200b\u200bof distortion very contained, if I remember well below zero (and with a straight 5K at 20 mA, are certainly due to the valve) .
During this time I'm too busy, but next time I ricapitano under the NC20, definitely pay attention to distortion parameter, but right now I'd bet that there will be nothing to report.

If I had any doubt about this transformation, as they do not do cert'uni incarogniscono you want to convince the neighbor at all costs. I sent through eBay auction valves and various objects at all latitudes: Australia, Canada, Singapore, Korea, USA, Thailand, Hong Kong, Japan, Panama, I would have no heartache at auction to put the NC20.

were used by the great Shishido in a project that appeared in Glass Audio Vol 1 No. 6 of 1994, the same design was then "revisited" at No. 3 Vol 9, 1997, reporting to the scheme:






propose this project as well suited to the topics under discussion.
Shishido, after trying different valves and tested various configurations, including even a 4-stage cathode follower to drive the 300B, at the end to decide the interstage transformer as the best solution. If the transformer
NC20 had introduced high distortions, would not have had this preference.
In the first version of the processor 94 NC20 is used with DC current rather low, 13.4 mA, if it were a problem it slide more, but the doubts are quelled in 1997, when Shishido revisits the unit and doubles to 26 mA current in the transformer.
He varies this parameter in the complex act to reduce the harmonic distortion cancellation, then the distortion parameter is the more kept an eye on.
If the DC current in the transformer NC20 was critical so dramatically, doubling, even going beyond the recommended value of 20 mA, the distortion would increase dramatically, leading to desist Shishido.
But, as shown in the next image, it is not.





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If I had plenty of NC20-distorting every time you get up to 1 mA DC current, then I would do some checking before giving it away .... For example
measure Henry and in the event that a significantly greater extent than the nominal value, they become unhealthy possible hypotheses about the GAP

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12 #

Some time ago, to test it basically a triode particular, these turned out to be extremely poisonous to the point of allowing the design of a MC phono based on this single active element, resulting in a gain of more than 1,200 (out, however, high impedance, so it must find a volume of 100 K, manages the trick with constant impedance offered by the RIAA LCR, which in turn sees input impedance well below the 10K).





To realize this scheme had everything except the RIAA LCR at 10 K.
I began to get interested and able to provide inductors compose, but I found no one claiming to be able to realize what I needed, in the quality and specifications. In addition I was also discouraged by extremely competent people, who told me that he humiliated with the problem and had noted a considerable difficulty in developing such an object.
happened that fate put us into the clutches, because shortly thereafter, in the underground of sound esoteric, began to circulate the rumor that S & B, urged by Thorsten, was putting up the implementation of this component.

At that time the name S & B was not consolidated as it is today, and typically do not take into account components popped out of nowhere, without a way to test its quality.
But shortly before I tested the volume on S & B transformer, a "small" of the TX-102, designed to compete directly in size and price, with the equivalent model Sowter.
compared directly with the Sowter 9335 is better in all this, in materials, electrical measurements and, listening to the overall neutrality and excellent speed.




This had created in me some great expectations for the RIAA in the making.
After a short time, the story took a turn more favorable, a friend of mine booked a couple of RIAA in question, I thought, "if I can make me pay, I make him ACT!

Continued ...

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pre-"provocation" on



# 11 is the outline I have described above, is in many ways I find it interesting.
For example
never seen (or at least not to my knowledge) a two-stage dry really able to adjust to the bottom 845. Then it's all very high potential el ' high voltage has a magical sound very special (and maybe one day they will say why).



The connection of an amplifier in a thrade talking about anything, not just for the fact that it was spoken before, but it is that I was born the idea for a kind of provocation I'm going to propose ...

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can do without the step up to MC

10 #
reference to the use of step-up transformer, we could call "duty" heads with only 1 ohm, with those from 2.5 to 3 ohms of the concerns I, with the heads from 20 to 40 ohms would be a duty to do without it ... with those of 240 ohms there own.

With the same pattern, I'd change strategy:



For some time not fiddled with the NC20, but the memory that I hold is the subject of the Empire, with a 20 mA EC8020 swings with ease and distortion below zero (due to the valve) and this also confirmed Jakelich me.
I remember a meeting held one evening long ago, in the laboratory of Brunetti (musical instruments), agreed: the owner of Audio Note Interstage (the model soon, designed to drive a PSE 845), Mr. Mariani (Graaf) and myself with the NC20. We got to the test with DC injection, because, with unanimous consent, it seemed just the way the NC20 tore the Audio Note UK already in the test instead. What happened 5Kohm connecting a resistor on the secondary (and in parallel with the measuring instruments), gradually nurturing the primary with a Variac. At one point, the sine wave is distorted Audio Note with a pronounced hump on the top, Tango NC20 instead held on for a blow when he began to tot and distort the appearance of sinusoid was less ugly.

The NC20 is in the top 5 best interstage of all time, and among these, it is in the second half.

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still on

9 #

reiterate that my comments were related to the RIAA LCR of 600 ohms, and regarding this, I stressed the importance of pilots with plenty of signal. For a mortgage would not differeza, but for the musical performance, the difference is definitely there!

Similarly, considerations of the transformer NP206, did not enter the merits of the chosen topology, but were designed to emphasize that the cost of considerable RIAA LCR does not automatically make a higher yield to listen.

The NP-206 is better than many others in the management of large swing (30 Vrms) with substantial power (1.5 Wrms) and these are excellent to introduce the 600-ohm LCR RIAA. Although this unit is particularly well done, making it suitable for various uses is not optimized for weak signals. This makes no difference to a mortgage, instead of listening, especially when it comes to phono preamps, the difference is remarkable.
If we want the RIAA LCR squeeze the best we need to optimize the strategy so that each piece is favored in its strengths and weaknesses in aspects protected.

As evidence that there are no contradictions ... that I keep the group praised: "E810F triode conn. / NP206 / EQ600P RIAA," but change the strategy:



I fielded the same players with ... different roles.
Now each component is able to make better, according to the strengths described above.
When the signal swing, the transformer NP206 shoot tens of volts into the RIAA LCR, this, referring to 600 ohms at both upstream and downstream, is tetragonal at all, making the most of his chances.
The preamplifier output is 600 ohms to all intents and purposes, therefore no problem in driving transformer volume (which are not easy to drive for many phono).

The NP206 is now affected by important signals, both voltage and current, which makes irrelevant the less sensitivity than some irons in the Permalloy, allowing them to make better (however Permalloy transformers would not allow such high polarization and could not handle the same signal values \u200b\u200bdell'NP206).

not within the substance of what the current scheme has become the first stage, because it has no direct relation to the exploitation of LCR RIAA argument (although obviously the NC20 in that position seem exaggerated, but it works better dell'NP206 as more sensitive and, even more obviously, it would not hurt to use a triode transconductance gain enormously higher in a dell'EC8010).

speech apart is the validity in terms of musical performance, the same reasoning, however, gave himself that is talked about a device that already exists, should not be excessive difficulty of the move some links and see if it sounds better in the manner proposed or not.

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question about 4 # 4 #

8 #

Let's review what has been said, I will try to substantiate in greater detail the considerations which appear to be "contradictory" and "specious."

I think the block "E810F triode / NP206 / RIAA EQ600P" very strong, but, despite numerous and abundant quality aspects are less valuable.
The best strategy is one that lurks at the lowest possible weaknesses, highlighting the strengths.

propose the scheme, added to the stadium after the RIAA, designed in a more general way possible, we do not care at all how it is constituted, that valve uses, what kind of load and anodic polarization system to adopt, are details that do not concern The comments made in any way and what they signified.


About this stage to reiterate concerns only a single, particular ... who gave himself the very weak signal arrives, it is certainly designed with all of the criteria similar to those required for a first phono stage (with input from an MM or a 4 mV MC, 0.4 mV + ste-up 10X, the second stage, then after the RIAA, there's about 7 mV). Continued ...

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7 #

actually can not use the condenser upstream of the RIAA is only apparent advantage. Report the RIAA bridged T upstream is not only more complex, more results in the loss of the biggest advantages typical it works and why not to adopt this solution.

remains only a valuable way: calculate an impedance for the RIAA more.
This would use a smaller decoupling capacitor, making it possible to use a higher-quality components (eg, silver mica or polystyrene slabs in an oil bath under glass) and allow the pilot with a simple, pure, triode.
must have thought the same thing Thorsten, because my knowledge should be to implement your requests by Stevens & Billington version of 10-ohm bridged the RIAA LCR T.
But on this component there are several mysterious aspects, that join to form a real case. Reference to the near post detailed account of this affair.

Meanwhile monster one possible solution to reduce the drawbacks associated with the down gain due to impedance matching transformer.
is superfluous to say, but the adoption of the mu triodes much higher than common, it is undoubtedly useful for this purpose.
Among several possible examples, I choose the more whimsical, by a devotee of the top audio Nouvelle vogue, Thomas Mayer (one of 3 or 4 at the end of the last century in search of EC8020)




The valve is used very unusual
mu
300 Gm 65 mA / V Ri
4600 ohm